package com.atguigu.gulimall.ssoserver.controller;

import com.sun.deploy.net.HttpResponse;
import org.omg.CORBA.portable.InvokeHandler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.UUID;

/**
 * @Author: WackyBoy
 * @Date: 2021/7/12 15:47
 */
@Controller
public class LoginController {

    @Autowired
    StringRedisTemplate redisTemplate;

    @GetMapping("/login.html")
    public String loginPage(@RequestParam("redirect_url") String url, Model model, @CookieValue(value = "sso_token", required = false) String sso_token) {
        if(!StringUtils.isEmpty(sso_token)) {
            // 说明之前有人登录过
            return "redirect:" + url + "?token=" + sso_token;
        }
        model.addAttribute("url", url);
        return "login";
    }

    @PostMapping("/doLogin")
    public String doLogin(@RequestParam("username") String username, @RequestParam("password") String password, @RequestParam("url") String url, HttpServletResponse response) {

        if(!StringUtils.isEmpty(username) && !StringUtils.isEmpty(password)) {
            // 登录成功跳回之前的页面
            // 把成功的用户保存, 浏览器z
            String uuid = UUID.randomUUID().toString().replace("-", "");
            redisTemplate.opsForValue().set(uuid, username);
            Cookie sso_token = new Cookie("sso_token", uuid);
            response.addCookie(sso_token);
            return "redirect:" + url + "?token=" + uuid;
        }
        // 失败,展示登录页
        return "login";
    }

}
